Android中EditText+图片+下拉框

效果说明：EditText内部右侧加图片，点击EditText显示下拉框

<EditText
android:id="@+id/et"
android:layout_width="90dp"
android:layout_height="wrap_content"
android:drawableRight="@mipmap/jiantou_down" //内部右侧添加图片
android:background="@drawable/yuanjiao"  //背景边框样式
android:paddingTop="2dp"
android:paddingBottom="2dp"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:focusable="false"  //禁止输入
android:cursorVisible="true"
android:textCursorDrawable="@null"  //不显示光标
android:text="北京机场"/>

drawable/yuanjiao.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/edit_text_color2" />  //内部颜色
    <corners android:topLeftRadius="1dp"
        android:topRightRadius="1dp"
        android:bottomRightRadius="1dp"
        android:bottomLeftRadius="1dp"/> //边框角（直越大圆角幅度越大）
    <stroke android:width="1dp" android:color="@color/edit_text_color" />  //边框颜色
</shape>

绘制PopupWindow下拉框

res/anim/dialog_top_in.xml(展示动画)

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:interpolator="@android:anim/accelerate_interpolator" >
    <translate
        android:duration="200"
        android:fromYDelta="-1"
        android:toYDelta="0" />
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="200"/>
</set>

res/anim/dialog_top_out.xml(退出动画)

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <!--%p指相对于父容器-->
    <translate
        android:duration="200"
        android:fromYDelta="0"
        android:toYDelta="-1" />
    <alpha
        android:fromAlpha="1.0"
        android:toAlpha="0.0"
        android:duration="200"/>
</set>

res/values/styles.xml中（切记别写反了）

<style name="AnimTop">
    <item name="android:windowEnterAnimation">@anim/dialog_top_in</item>
    <item name="android:windowExitAnimation">@anim/dialog_top_out</item>
</style>

自定义PopupWindow

package com.test;

import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.PopupWindow;

import com.test;
import com.test.StationPoupAdapter;

import java.util.ArrayList;
import java.util.List;

public class StationPopupWindow extends PopupWindow {
    private Context context;
    private View mMenuView;
    public StationPopupWindow(Context context, int width, int height) {
        super(context);
        this.context = context;
        LayoutInflater inflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        mMenuView = inflater.inflate(R.layout.dialog_station, null);
        // 设置SelectPicPopupWindow的View
        this.setContentView(mMenuView);
        // 设置SelectPicPopupWindow弹出窗体的宽
        if (width==0){
            width = ViewGroup.LayoutParams.MATCH_PARENT;
        }
//        this.setHeight(height);
//        this.setWidth(width);
        // 设置SelectPicPopupWindow弹出窗体可点击
        this.setFocusable(true);
        // 设置SelectPicPopupWindow弹出窗体动画效果
        this.setAnimationStyle(R.style.AnimTop);
        // 实例化一个ColorDrawable颜色为半透明
        ColorDrawable dw = new ColorDrawable(0x00000000);
        // 设置SelectPicPopupWindow弹出窗体的背景
        this.setBackgroundDrawable(dw);

        ListView lv_dialog_station = mMenuView.findViewById(R.id.lv_dialog_station);
        List<String> list = new ArrayList();
        list.add("北京机场");
        list.add("上海机场");
        list.add("香港机场");
        list.add("澳门机场");
        StationPoupAdapter adapter = new StationPoupAdapter(context,list);
        lv_dialog_station.setAdapter(adapter);
        lv_dialog_station.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                listener.onItemClickListener(list.get(i));
                dismiss();
            }
        });
    }

    OnListener listener;
    public void setOnItemClick(OnListener listener){
        this.listener = listener;
    }
    public interface OnListener{
        void onItemClickListener(String string);
    }

}

Activity中使用

StationPopupWindow station;
private void showStationPopupWindow(EditText v, Activity activity) {
    if (station!=null&&station.isShowing()){
        return;
    }
    int width = activity.getWindowManager().getDefaultDisplay().getWidth();
    width = width * 5 / 6;
    int height = activity.getWindowManager().getDefaultDisplay().getHeight();
    height = height * 3 / 5;
     station = new StationPopupWindow(activity, width, height);
    darkenBackground(1.0f,activity);
    //x、y指的是偏移量坐标点
    int[] location = new int[2];
    v.getLocationOnScreen(location);
    //指定下拉框的位置（位于EditText的下方）
    station.showAtLocation(v, Gravity.NO_GRAVITY, location[0],
        location[1] + v.getHeight());
    station.setOnItemClick(new StationPopupWindow.OnListener() {
        @Override
        public void onItemClickListener(String string) {
            v.setText(string);
        }
    });
    station.setOnDismissListener(new PopupWindow.OnDismissListener() {
        @Override
        public void onDismiss() {
            darkenBackground(1f,activity);
            chooseDownORTop(false);
        }
    });
}
//改变背景颜色
private void darkenBackground(Float bgcolor, Activity activity) {
    //背景灰色效果
    WindowManager.LayoutParams lp = activity.getWindow().getAttributes();
    lp.alpha = bgcolor;//0.0-1.0透明度
    activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
    activity.getWindow().setAttributes(lp);
}

EditText引用

EditText et_station = findViewById(R.id.et_station);
Drawable drawable = getResources().getDrawable(R.mipmap.jiantou_down);
// 这一步必须要做,否则不会显示.
drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());
//在代码中设置drawableRight（Editext内图片位置）
et_station.setCompoundDrawables(null,null,drawable,null);
et_station.setOnClickListener(new View.OnClickListener() {
     @Override
     public void onClick(View view) {
        showStationPopupWindow((EditText) view, (Activity) context); 
     }
});